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ok

im working on those problems too im not that good but i would simplify 121-6/ then.. which is?

well first of all.....write out two different equations to eliminate that +-

@cos00155079 you doing the Life of Fred series?

i know you dont have to but its easier...its cool we wont do that then

the what? nooo...

121 - 60 = ?

61

10

\[1\]
\[-21\]

why 60/6 if it was a 61?

ik

alright lets see now...

the equation is:
\[x=-11\pm \frac{ \sqrt{121-60} }{ 6 } \]

oh lawd....lol

sq rt of 121 = 11

whats with teh line over the 0?

its just how it is. not my doing.

well...it means that its a repeating number but its usually only after a decimal point...weird.

I have no idea what to do with the 60 and the line over it.

the original equation is:
\[3x^{2}+11x+5=0\]

any specific way she is wanting you to go about that?

its a messup about square roots.

or can we solve for x any old way?

yea, using \[ax^{2}+bx+c=0\] and the
\[x=-b\pm\frac{ \sqrt{b^{2}-4ac} }{ 2a }\]

the QuAdRaTiC ForMulA.....lol

ok so
3x^2 + 11x +5 = 0
ax^2 + bx +c

a = 3
b = 11
c = 5

\[-11\pm \frac{ \sqrt{11^{2}-4(3*5c)} }{ 2(3) }\]

does that look right?

ignore the c next to the 5, lol
|dw:1348620564257:dw|

|dw:1348620625370:dw|

i see where we screwed up now in the beginning

|dw:1348620687638:dw|

NOW......what has your teacher said to do with this?

I teach my self. I am homeschooled, i use the LoF series.

oh, cool

well....you could work it out to this way if you wanted to....
|dw:1348620830185:dw|

the last answer i got was \[x_{1}\] and \[x_{2}\]

i mean factoring

ok well then we must find exact values

the sq rt of 61 is 7.810249675906654

divided by 6 = 1.301708279317776

-11 + 1.301708279317776 = ?
-11 - 1.301708279317776 = ?

we need not find exact values, we need to find \[x_1\] and \[x_2\]

x1 and x2 are exact values

it appears anyways...this one is ugly

x1 = -9.698291720682224, x2 = -12.30170827931778 lol

none of this seems right to me and its driving me nuts, lol

for sure you need to find the square root of 61

which is not what you have in your original problem at the top

http://www.mathsisfun.com/quadratic-equation-solver.html

Heres your answer

its these:
\[x_{1}=\frac{ -11+\sqrt{61} }{ 6 }\]
and
\[x_{1}=\frac{ -11-\sqrt{61} }{ 6 }\]

thats what i would put....what you just put

this is what my brother says, who is in college.

|dw:1348621589793:dw|

it means the same thing but most people show it liek yoru brother did

w/e i have it and its done. thanks for any help!

yw